AutoRap by Smule (http://www.smule.com/apps) Turns speech into rap and corrects bad rapping; maps the syllables of speech to any beat, creating a unique rap every time; tap to rap; Talk Mode: talk into the app and app morphs speech into a legit rap; create original rap songs with Freestyle Beats or use Premium Songs from famous rap artists; Rap Mode: rap along to favorite songs, following the lyrics that scroll across the screen; Rappify setting will correct user’s flow, snapping syllables to the rhythmic grid of the underlying beat; Rap Battle: challenge anyone to a rap off and weave both component’s verses into a single track; headphones recommended; share creations with friends via Email, Facebook, or Twitter; new beats and songs added every week; listen to the Top Rappers and support them with Props; earn additional plays; (iOS 8.0 or later; Android 4.0.3 and up).

American Idol (http://www.americanidol.com/app) Companion experience to the singing competition; watch and share on-demand videos, join the conversation, and get the latest Idol news; during live shows can vote for your favorite contestants in real-time, view photos, keep up with the judges, and more; featuring host Ryan Seacrest and the current judging panel; (iOS 10.0 or later; Android 5.0 and up).

Vocal Tech – Guide to Classical Singing (Jeremy Hunt) Interactive guide to classical singing; intended for students of classical vocal music including opera, oratorio, song literature, etc.; for any student of singing hoping to build a solid technical foundation; discusses Phonation, Resonance, Posture, and Breathing; includes vocal exercises with recorded examples and a voice recorder for the student; created by a tenured university professor with a doctorate in voice performance and vocal pedagogy; (iOS 6.1 or later).

Schott Pluscore Sing-Along (http://www.schott-music.com/pluscore/sing-along) Unique app with adaptable accompaniments; ideal trainer for rehearsing opera arias and other repertoire; offers sheet music that can be set to the individual needs of the singer; add page breaks, select a zoom level, or transpose the music into another key; integrated MIDI Studio and “Virtual Conductor”; can adjust the accompaniment to match interpretation, set the tempo, and change the volume; “Virtual Conductor” allows student to conduct their own accompaniment and then use it for practice; listen to voice part separately or record own interpretation; app offers opera arias for soprano, mezzo-soprano, tenor, baritone, and bass; includes arias by composers such as Verdi, Mozart, Bizet, or Wagner; new sheet music added on a regular basis; (iOS 4.2 or later).

Opera Classic Music Collection (http://strongwang2012.blog.163.com/) Music player with knowledge; includes portraits of forty-seven great composers; read about them while listening to ninety-nine of the best classical opera compositions; shuffle or order play; repeat mode; music listed by composer, favorites, or all; search by composer or music; (iOS 4.3 or later).

Met Opera on Demand (http://www.metoperafamily.org/ondemand/index.aspx) Instant and unlimited access to hundreds of Met performances; subscription streaming service; includes the Met’s award-winning “Live in HD” series of movie-theater transmissions; classic Met telecasts; more than 300 radio broadcasts dating back to 1936; (iOS 9.2 or later; Android 4.2 and up).